312025

Next Previous Axial Lead and Cartridge Fuses Glass Body 3AG Fast-Acting Type 312/318 Series A standard for cost-effective reliability and performance in circuit protection, the 3AG fuse satisfies a broad range of application requirements. UL ® ® QPL ELECTRICAL CHARACTERISTICS: % of Ampere Rating 110% 135% 200% Ampere Rating 1/32– 35 1/32– 35 1/32– 10 12– 30 35 Opening Time 4 hours, Minimum 1 hour, Maximum 5 sec., Maximum 10 sec., Maximum 20 sec., Maximum AGENCY APPROVALS: Listed by Underwriters Laboratories and Certified by CSA through 30 amperes. 1/100–10 amperes listed to UL 248-14 (UL 198-G) 12–30 amperes listed to UL 275. AGENCY FILE NUMBERS: UL E10480, CSA LR 29862. FUSES TO MIL SPEC: See F02A cartridge type in Military Section. 312 000 Series 6.985 (.275") 6.35 (.25") 31.75 (1.25") 318 000 Series 0.813 (.032") INTERUPTING RATING: 10,000A @ 125VAC 35A @ 250VAC 38.1 (1.50") TYP. Axial Lead Material: Solder coated copper. 32.385 (1.275") ORDERING INFORMATION: Cartridge Catalog Number 312.031 312.062 312.100 312.125 312.150 312.175 312.187 312.200 312.250 312.300 312.375 312.500 312.600 312.750 312 001 312 1.25 312 01.5 312 01.6 312 1.75 312 01.8 312 002 312 2.25 312 02.5 312 003 312 004 312 005 312 006 312 007 312 008 312 010 312 012 312 015 312 020 312 025 312 030 312 035 290 Axial Lead Catalog Number 318.031 318.062 318.100 318.125 318.150 318.175 318.187 318.200 318.250 318.300 318.375 318.500 318.600 318.750 318 001 318 1.25 318 01.5 318 01.6 318 1.75 318 01.8 318 002 318 2.25 318 02.5 318 003 318 004 318 005 318 006 318 007 318 008 318 010 — — — — — — Ampere Rating 1/32 1/16 1/10 1/8 15/100 .175 3/16 2/10 1/4 3/10 3/8 1/2 6/10 3/4 1 11/4 11/2 16/10 13/4 18/10 2 21/4 21/2 3 4 5 6 7 8 10 12 15 20 25 30 35 Voltage Rating 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 32 32 32 32 32 32 Nominal Resistance Cold Ohms 23.3 24.5 11.2 7.10 5.10 3.85 3.40 3.00 2.00 1.40 0.820 0.495 0.360 0.243 0.189 0.138 0.103 0.0930 0.0850 0.0820 0.0700 0.0590 0.0510 0.0424 0.0291 0.0223 0.0177 0.0145 0.0121 0.00925 0.0071 0.0052 0.0034 0.0024 0.0019 0.0013 Nominal Melting I 2 t A2 Sec. 0.0000300 0.000249 0.00102 0.00289 0.00550 0.00960 0.0128 0.0165 0.0355 0.0689 0.185 0.483 0.880 1.84 0.760 1.45 2.35 2.80 3.60 3.85 5.20 7.20 9.54 14.0 28.5 50.0 81.1 118.0 166.0 298.0 — — — — — — Average Time Current Curves .031 A .062 A .125 A 1000 100 TIME IN SECONDS 10 1 0.1 0.01 0.005 0.01 .250 A .375 A .500 A .750 A 1A 1.5 A 2A 2.5 A 3A 4A 5A 6A 7A 8A 10 A 1 0.1 CURRENT IN AMPERES 10 100 w w w. l i t t e l f u s e . c o m